Young Blonde Girl In The Field Of Yellow Flowers

Co = corolla (petal whorl; e. g., Co3(x) = petals some multiple of three )
Z = add if zygomorphic (e. g., CoZ6 = zygomorphic with 6 petals)
A = androecium (whorl of stamens; e. g., A∞ = many stamens)
G = gynoecium (carpel or carpels; e. g., G1 = monocarpous)